The hex color #c72436 is a dark color. The web-safe version is Hex
#CC3333. A complementary color is
#38DBC9. The grayscale version is
#606060. A 20% lighter version of the original color is
#FA5769, and Hex
#940003 is the 20% darker color. If the color is saturated by 10%, you get
#D11E32. If the color is desaturated by 10%, the color
#BD2A3A is obtained.